package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    public String paymentInfo_ok(Integer id){
        return "线程池"+Thread.currentThread().getName()+"paymentInfo_ok id:"+id+"正常访问";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value = "5000")//该线程3秒内服务正常
    })
    public String paymentInfo_Timeout(Integer id){
        int timeOut=1;
        //int age=10/0;
        try{
            TimeUnit.SECONDS.sleep(timeOut);
        }catch (Exception e){
            System.out.print(e);
        }
        return "线程池"+Thread.currentThread().getName()+"paymentInfo_Timeout等待了："+timeOut+"秒， id:"+id;
    }
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池"+Thread.currentThread().getName()+"系统繁忙或者运行报错，请稍后再试 id:"+id+"\t"+"/(ㄒoㄒ)/~~";
    }

    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)
    {
        if(id < 0)
        {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }
}
